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Finding the Fourth Proportional to 62,620.90, 93,709.62 and 38,939.60

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Solution

The fourth proportional to 62,620.90, 93,709.62 and 38,939.60 is: 58,271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,620.90 : 93,709.62 = 38,939.60 : x
  2. Step 2: Convert to fraction form
    62,620.90/93,709.62 = 38,939.60/x
  3. Step 3: Cross multiply
    62,620.90x = 93,709.62 × 38,939.60
  4. Step 4: Simplify right side
    62,620.90x = 3,649,015,118.95
  5. Step 5: Solve for x
    x = 3,649,015,118.95/62,620.90
  6. Step 6: Final answer
    x = 58,271.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.